unsigned int size;
std::list< std::string > files;
void initialize()
{
if( _access( "filelist.txt", 06 ) == 0 )
{
// 如果文件存在则从文件中读取有效的文件名
std::ifstream file( "filelist.txt" );
std::string str;
struct _stat buf;
while( std::getline( file, str ) )
{
if( !str.empty() )
{
files.push_back( str );
if( 0 == _stat( str.c_str(), &buf; ) )
{
size += buf.st_size;
}
}
}
}
else
{
// 如果文件不存在则以默认的时间作为先后顺序
struct _finddata_t fileinfo;
intptr_t hand = _findfirst( "E:\\source\\repos\\trace\\Debug\\*.tlog", &fileinfo; );
if( hand == -1 )
{
return;
}
files.push_back( fileinfo.name );
while( _findnext( hand, &fileinfo; ) == 0 )
{
files.push_back( fileinfo.name );
size += fileinfo.size;
}
_findclose( hand );
}
files.sort();
}
void DeleteOldTrace()
{
struct _stat buf;
if( 0 == _stat( "cur.tmf", &buf; ) )
{
size += buf.st_size;
}
// 删除最早的文件
std::string str;
std::string path = "E:\\source\\repos\\trace\\Debug\\";
std::list< std::string >::iterator it = files.begin();
while( size >= 1*1024 && it != files.end() )
{
str = path + it->c_str();
if( 0 == _stat( str.c_str(), &buf; ) )
{
size -= buf.st_size;
remove( str.c_str() );
it = files.erase( it );
}
else
{
++it;
}
}
// 重新写入到文件中
str = path + "filelist.txt";
std::ofstream file( str.c_str() );
if( file.is_open() )
{
for( it = files.begin(); it != files.end(); ++it )
{
file << (*it) << "\n";
}
file.close();
}
}
